vanden berg-he



2 Sh t -Sh t 2. P. VANDEN BERGHE.

TINNERS SEAMING TOOL.

Patented June 9, 1885.

Fig". 6.

Fig. 16'.

v INVENTOR:

WITNESSES:

N, PETERS. Pimvutbo ra lm, wuhlngum DC.

"ATENT me PETER VANDEN BERGHE, or PHILADELPHIA, PENNSYLVANIA, ASSIGNOR F TWO-THIRDS TO EDWARD W BOTHOF SAME PLACE. I p 1 RICHARDS AND ALFRED H. MEAR,

TINNER.S SE AMlNG-TOOL.

SPECIFICATION forming part of Letters Patent No.319,761, dated June 9, 18 85.

' Application filed February 10, 1585. (No modeL) I in Tinmens Scanning-Tools, which improve-' ment is fullyset' forth in the following speci-. fication and accompanying drawings, in which IO Figure 1 represents a top or plan view of a seamingtool embodying my invention. Fig.

2 represents a front view thereof. Figs. 3 and 4 represent views of opposite ends thereof. Fig. 5 represents a vertical section in line w,

.15 Figs. 1 and 3. Fig. 6 represents a vertical section in line at m, Fig. 1. Fig. 7 represents a vertical section in line 3 y, Fig. 1. Fig. 8 represents a vertical section in line 22, Fig. 1. Fig. 9 represents a vertical section similar to 20 that of Fig. 7, the parts being, however, in different positions. Figs. 10, 11, 12, and 13 represent the different steps in the formation of a seam by employment of the tool embodying my invention.

Similar letters of reference indicate corresponding parts in the several figures.

My invention consists of a tool adapted, first, for bending a piece of metal so that it laps over another piece of metal, and then 0 bending both pieces at the lap so as to form a double seam, as will be hereinafter fully set forth.

Referring to the drawings, A represents the bed or frame of the tool, and B represents a rotary bender, which is journaled to the ends of the bed, as at B, and provided with an operating-handle, G.

D represents a movable clamp, which has a working-face, E, against which B is brought in contact, the bed A having a working-face,

E, the benderB being adapted to work against both faces E E, as shown in the drawings. To

said clamp is connected an arm, D, which is provided with a nose, F, the latter entering the groove of a rotary cam, G, which is properly mounted on the bed or frame of the tool and provided with an operating-lever, H.

0 represents set-screws, which are passed through the bearings B of the bender B an adapted to tighten against said bender for clamping or looking the same. To the frame or bed is pivoted or hinged, as at J, a stand or block, J, and to said bed is secured amovable block, K, the blocks J K being on opposite sides of the baseof said bed for the purpose of adjusting the height of the tool, the block K being raised or lowered by means of inclined ways M, which are secured to a slide, M, operated by a screw, L, and which ride in guides N, secured to the block K. The bear- '60 ings B are secured to the main portion of the frame or bed A by means of screws P.

The object of the invention is the formation of the double seam shown in Fig. 13, for which purpose I employ sheets of metal having flanges of different lengths, the first step being the bending of the end of the longer flange laterally over the end of the shorter flange, as in Fig. 10, then bending down said end, as in Fig. 11, bending out the lapped ends, as in Fig. 12, and, finally, bending down said ends against the side of the short flange,- whereby the ends of the flanges are inclosed and a double seam is produced, the same being tightly closed and of a superior order.

The operation is as follows: Two pieces of metal having flanges of different lengths are placed together, so that the flanges are back to back, and the flanges introduced into the tool between the bed A and clamp D, which are primarily separated. It will be seen that the clamp D occupies only about one-half of the length of the bed; also that for the first operation the stands or blocks J K have been lowered. The handle 0 is now grasped, and 8 the rotary bender B given a motion forward. The result of this operation is the bending downward of that portion of the longer flange of the two pieces of metal over the face E of the clamp D, the result whereof is shown in 0 Fig. 10. The toolis now moved along in the direction of the part bent over, a distance nearly equal to the length of the clamp D. The portion bent now occupies a place infront being repeated, the portion bent, as shown in of the face E of the bed A. The operation 5 Fig. 10, is now compressed by the lug on the left hand of the bender B, (see Figs. 1 and 2,) and pressed down, as shown in Fig. 11. While this isbeing done a new and adjacent portion of the longer of the two flanges of metal is bent, as shown in Fig. 10. This operation is continued to the end of the seam. (See Figs. 6 and 7.) To clamp and release the two flanges of metal, the handle H is properly operated,.turning the grooved cam G, and by means of the nose F, riding in said groove, the arch or arm D, connected to the clamp D, is moved toward or from the bed A, thus making a space between the clamp D and 'bed A for the ready introduction of the flanges of metal. The main end of the clamp D and inner end of the bender B, being adjacent, are rounded or bulging in opposite directions, so that the metal in passing through the different angles in crimping will not be abruptly bent or broken. Having accomplished this, the block J is swung up, being journaled at J in the ends B of the bed, (see Figs. 8 and 9,) and the block K is drawn inward by slacking the screw L and moving the same, and consethe bed A of the tool.

.lowers the machine the thickness of the blocks J and K. The operation as described for the first bend is now repeated, the result whereof may be seen in Figs. 12 and 13. To gain additional purchase on the bender, I may add another handle, (shown in'dott'ed lines in Fig.

'1,) and I may also pivot both blocks J and K,

or make them both to raise and lower by a sliding motion,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

'blocks J K, substantially as and for the purpose set forth.

3. In combination with the'bed of a seamingtool, the slide M, having inclined ways M, the block K, having guides N, and screw L,

' substantially as and for the purpose set forth. quently the slide M, so that the lugs M ride in the guides N and draw the block K into 1 It is evident that this PETER VANDEN BERGHE.

Witnesses:

JOHN A. WIEDERSHEIM, A. P. GRANT. 

